Chapter XXIII of Part I gives an outline of the advance of nut culture within recent years. While it is true that nut-orcharding is yet largely in the experimental stage, yet at this time the production of the Almond, Walnut, and Japan Chestnut and its American seedlings, are commmercial crops in parts of the Union; and some species of our native nuts, notably the Pecan and Shellbark Hickory, have been propagated and orchard-planting commenced, but as yet the market is mainly supplied from the indigenous forest-trees.